<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
<script>
    var socket
    if (!window.WebSocket) {
        window.WebSocket = window.MozWebSocket
    }
    if (window.WebSocket) {
        socket = new WebSocket("ws://localhost:8080/ws")
        socket.onmessage = function (event) {
            var ta = document.getElementById('responseTest')
            console.error(event.data,event)
            ta.value = ta.value + '\n' + event.data
        }
        socket.onopen = function (event) {
            var ta = document.getElementById('responseTest')
            ta.value = '连接开启!'
        }
        socket.onclose = function (event) {
            var ta = document.getElementById('responseTest')
            ta.value = '连接关闭!'
        }
    } else {
        alert('你的浏览器不支持WebSocket')
    }

    function send(message) {
        if (!window.WebSocket) {
            return
        }
        if (socket.readyState === WebSocket.OPEN) {
            socket.send(message)
        } else {
            alert('连接没有开启')
        }
    }
</script>
<form onsubmit="return false">
    <h3>WebSocket 聊天室：</h3>
    <textarea id="responseTest" style="width: 500px;height: 300px;"></textarea>
    <br>
    <input type="text" name="message" style="width: 300px;" value="Welcome to woniuxy.com">
    <input type="button" value="发送消息" onclick="send(this.form.message.value)">
    <input type="button" value="清空聊天记录" onclick="javascript:document.getElementById('responseTest').value=''">
</form>
</body>
</html>
